Problem 58a
Find each product. Write answers in standard form. (1+3i)(2-5i)
Problem 59
Solve each equation. √3x=√(5x+1)-1
Problem 59
Work each problem. Elmer borrowed $3150 from his brother Julio to pay for books and tuition. He agreed to repay Julio in 6 months with simple annual interest at 4%. How much will the interest amount to?
Problem 59
Solve each equation using the quadratic formula. (1/2)x2 + (1/4)x - 3 = 0
Problem 59
Solve each equation or inequality. | 8x + 5| = 0
Problem 59
Solve each rational inequality. Give the solution set in interval notation. (x+2)/(x+7)≥0
Problem 60
Solve each equation using the quadratic formula. (2/3)x2 + (1/4)x = 3
Problem 60
Work each problem. Levada borrows $30,900 from her bank to open a florist shop. She agrees to repay the money in 18 months with simple annual interest of 5.5%. How much must she pay the bank in 18 months?
Problem 60
Solve each equation. √2x=√(3x+12)-2
Problem 60
Dimensions of a Right Triangle The shortest side of a right triangle is 7 in. shorter than the middle side, while the longest side (the hypotenuse) is 1 in. longer than the middle side. Find the lengths of the sides.
Problem 60
Solve each equation or inequality. | 7 + 2x| = 0
Problem 60
Solve each rational inequality. Give the solution set in interval notation. (x+1)/(x-4)>0
Problem 60a
Find each product. Write answers in standard form. (2+i)²
Problem 61
Let ƒ(x)=-3x+4 and g(x)=-x2+4x+1. Find each of the following. Simplify if necessary. See Example 6. ƒ(-x)
Problem 61
In the metric system of weights and measures, temperature is measured in degrees Celsius (°C) instead of degrees Fahrenheit (°F). To convert between the two systems, we use the equations. C =5/9 (F-32) and F = 9/5C+32. In each exercise, convert to the other system. Round answers to the nearest tenth of a degree if necessary. 20°C
Problem 61
Solve each equation. 4x⁴+3x²-1 = 0
Problem 61
Solve each equation. √(x+2)=1-√(3x+7)
Problem 61
Solve each equation or inequality. | 4.3x + 9.8| < 0
Problem 61
Solve each rational inequality. Give the solution set in interval notation. (1-x)/(x+2)<-1
Problem 61a
Find each product. Write answers in standard form. (3+i)(3-i)
Problem 62
Solve each equation. √(2x-5)=2+√(x-2)
Problem 62
Solve each equation or inequality.
Problem 62
Solve each rational inequality. Give the solution set in interval notation. (6-x)/(x+2)>1
Problem 63
In the metric system of weights and measures, temperature is measured in degrees Celsius (°C) instead of degrees Fahrenheit (°F). To convert between the two systems, we use the equations. C =5/9 (F-32) and F = 9/5C+32. In each exercise, convert to the other system. Round answers to the nearest tenth of a degree if necessary. 50°F
Problem 63
Solve each rational inequality. Give the solution set in interval notation. 3/(x-6)≤2
Problem 63
Solve each equation. √(2√(7x+2)) = √(3x+2)
Problem 63
Solve each equation using the quadratic formula. See Examples 5 and 6.
Problem 63a
Find each product. Write answers in standard form. (-2-3i)(-2+3i)
Problem 64
Solve each equation using the quadratic formula. See Examples 5 and 6.
Problem 64
Solve each equation. √(3√(2x+3)) = √(5x-6)
Ch. 1 - Equations and Inequalities
